#include "widget.h"
#include "ui_widget.h"
#include "QNetworkDatagram"

const QString& SERVER_IP = "127.0.0.1";
const quint16 SERVER_PORT = 9090;

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);

    socket = new QUdpSocket(this);

    this->setWindowTitle("客户端");

    connect(socket, &QUdpSocket::readyRead, this, &Widget::processResponse);
}

Widget::~Widget()
{
    delete ui;
}


void Widget::on_pushButton_clicked()
{
    const QString& text = ui->lineEdit->text();

    //构造UDP请求数据
    QNetworkDatagram requestDatagram(text.toUtf8(), QHostAddress(SERVER_IP), SERVER_PORT);

    socket->writeDatagram(requestDatagram);

    ui->listWidget->addItem("客户端说:" + text);

    ui->lineEdit->setText("");
}

void Widget::processResponse()
{
    const QNetworkDatagram& responseDatagram = socket->receiveDatagram();
    QString response = responseDatagram.data();

    ui->listWidget->addItem("服务器说" + response);
}
